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Imagery Specifications

Displayed below are specifications for the base product offered by Maryland's digital high-resolution aerial photography program. Detailed specifications can be found in the Digital High-Resolution Aerial Photography Contract for the State of Maryland.

All products meet or exceed the ASPRS Class I Accuracy Standards for 1" = 200' maps. The table below interprets the requirement in terms of RMSE (Root Mean Square Error), CE90 (Circular Error at the 90% confidence level), RMSE (Square Root of RMSEx + RMSEy) and Accuracy (Horizontal Radial Accuracy at 95% confidence level). The imagery is delivered in fo​ur band (red, green, blue and near-infrared).

Map Scale Pixel Resolution RMSExy CE90 RMSEr Accuracyr
1"=200' 6 inches 2.000' 4.292' 2.828' 4.895'

Please contact the GIO Office at service.desk@maryland.gov for more information.​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​